Antisubmarine device.



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M. HEROS. i ANTISUBMARINEIDEVICE. APPLICATION FILED .IIILY 2.1918.

Padcenied Apr; 8, 1919.

2 SHEETS-SHEET I.

VI. PIEROG.

ANTISUBMARINE DEVICE. APELICATION FILED JULY 2, 191.

1;,299375.` Patented Apr. 8,1919.

2 SHEETS-SHEET 2.

j elevational .view of the net,

the outer downturned ends nanna: rrnnoe, or new .annnnnnng Nova scorre., canapa.

amuseer/Inman envien.

Specification of Letters Patent.

iatented Apr. S, idi.

Application led July 2, 1918. Serial No. 242,997.

To all whom t may concern:

Be it known that I, Manen PIEROG, a subject of the Emperor of Austria, residing at vNew Aberdeen, Province of Nova Scotia and Dominion of Canada, have invented certain new and useful improvements in Antisubmarine Eevices, of which the following is a specification.

This invention relates to improvements in devices for fendingr or warding ofi the at-l tacks of undersea projectiles.

The principal object of the invention is to provide a novel form of net adapted to be disposed circumjacent to the vhull of a vessel, the net being comprised of relatively small sections interengaged together, and so constructed as to oder a resilient armor ef` fcctually preventing damage from occurring by the attack of a torpedo, mine or like un dersea projectile;

A. further object is to provide support means for the net in which the distance between the net and the hull of the vessel may be varied.

rEhese and other like objects are attained by the 'novel of parts hereinafter described and shown in the accompanying; dra-wings, forming a'` material part of this disclosure, and in Whichz- Figure 1 is a top plan View showing a conventional type of ship and indicating the application of the invention.

Fig. 2 1s an enlarged fragmentary verti cal sectional view of the net, showing the -manner of attachment to the ship.

Fig. 3 is a similar View of the same showing the parts in their relative positionsduring the rolling motion 'of the vessel.

Fig. 4 is an enlanged fragmentary side and Fig. 5 is a greatly enlarged sectionall view taken on line 5--5` of Fig. 2.

Referring now -more particularly to the drawings, ventional type of a ship having all the usual mechanisms for navigation and propulsion.y

Attached'at uniformly spaced intervals, at the upper portion of thehull of the ship, are support bars 14, preferably rigidly affixed within the hull by screws or'rivets 15,

16 of the support hars 'being formed into hook-like eiements i?. engageable vwith eyes 18, secured mythe upper horizontal elements .19 'of the ivarding net frame 20. A similiar base ele- Aconstruction and combination the numeral 10 indicates'a conment 21 extends outwardly in the manner of a ledge or flange from the lower edge of the frame 20, while interposed therebetween are horizontal plates Y 22 extending outward to the same distance as the upper and lower plates 19 and 21.

Extending 19, 21 and 22 are vertical strips 24 forming a plurality of cells 25, adapted to receive between these several plates and firmly maintain a similar number of coiled springs 26, the same being` made of resilient. wire and adapted to interpose' an eiiectual barrier between the advancing point of `an undersea projectile and the hul-l` of the ship, forming in edect a substantially invulnerable `guard.

Attached to the hull of the shipfare brackets 30, the same being engaged by means of bolts or rivets 31 and formed with cylindrical extensions 32 engageable within simil-ar cylinders 53 having enlarged outer heads 35 and connected with the fixed cylinders, upon which they are slidable by pins 36 the amount of movement slots 37 in which the pins move.

fxed in the outer ends of the heads 35 are rotatably mounted wheels 39, the saine beingy adapted to engage with the rearof the vertical chambers and rigidly secured inthe frames 2O are bars 40 enterable Within appropriate openings formed in the head 35, the inner ends of the bars being formed into racks 41 engageable with the gears 42 fixed on spindles 44, rotatably mounted in the cylinders 33. l y

Also Xed on the spindles 144 so as lto rotate with them, are bevel gears 45, meshing with mating gears 46, secured on'the ends of sleeves 48, rotatably mounted inthe bearings 49, secured to the'cylinder 33 so' as to move longitudinally of the cylinder 32.

The interior of the sleeves 48 are screwthreaded and engageable with the threaded ends 50 of rods 51; secured by brackets 52 within the .main brackets 30, attached to the lhull of the vessel, thus providing,- a supporting-f means, which at the same time Will permit of the swaying or lateral movement of the net relative to the lhull of thev Ship as can be seen in Figs. 2 and 3.

In operation if the ship is caused to sway, obviously the racks tends to move away from their supports which movement actuates Mthe train of L.ears and their operative connections so that the head 35 may be moved to er from the buil of the s ip in an obvious manner, thereby permitting the net to remain eubstfininlly `vertical at all times.

Having t-hne described my invention what I. claim as new and desire to secure by Letters Patent, is.

l. In a net support, the combination with a bracket secured to the hull of a ship, said bracket having an outwardly extending horizontal cylinder, a. second Cylinder engaged telescopicelly on the irst named cylinder,1 a. heed formed with smid second cylinder. a net having a rigid backing, i ruck eXending from said belcing into the head of the second named cylinder, e spindle mounted rensversel).y in said second eylinder, e gear on said Spindle engageeble with the teeh of said rack, ay threaded Sleeve een ried by one of Seid cylinders ineens com bined with seid gear forroming said memes threaded sleeve, and a screw threaded bolt fixed Within the lower end of said bracket eng-ugezible within said threaded sleeve whereby, due to the movement of seid net, said cylinders are moved one within the other.

2. In a net support, the combination with :i pair of telescopic elements om being rig idlyengaged upon the hull of the ship, and the other slidable thereon, of a heed formed with the second named telescopic elements, a rack bar enteifeble through seid heed, said reel; bnr being engziger'l with e net, and means operable by Seid rack bei" whereby tle second named telescopic element is moved upon said rigid elemen.

In testimony Iwhereof l have :iflxed in);

signature.

MREK PERGG. 

